If the two people keep their clothes on whilst doing this it is unlikely that it would result in a pregnancy as the sperm would have to get through both sets of clothes and then get inside the vagina - It is possible for this to cause a pregnancy but the chance of it happening is very low. Pre-cum comes out right before semen, which has live sperm that can lead to pregnancy. Consider keeping emergency contraception on hand to help. Many factors, including environment, your…. Here's how long it takes for each birth control option to…. As pre-ejaculatory fluid pre-cum can contain sperm it is advisable to take emergency contraception whether the man has ejaculated or not. How effective is each contraceptive? In fact you are more likely to get pregnant the first time even if you use a condom because you are less experienced and more likely to get it wrong. Regardless of what method of contraception or STI prevention you chose to use, you can use Clue to track your sex habits, signs of pregnancyand symptoms of STIs.